/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:03:10,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:03:10,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:03:10,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:03:10,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:03:11,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:03:11,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:03:11,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:03:11,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:03:11,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:03:11,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:03:11,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:03:11,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:03:11,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:03:11,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:03:11,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:03:11,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:03:11,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:03:11,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:03:11,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:03:11,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:03:11,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:03:11,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:03:11,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:03:11,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:03:11,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:03:11,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:03:11,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:03:11,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:03:11,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:03:11,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:03:11,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:03:11,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:03:11,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:03:11,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:03:11,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:03:11,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:03:11,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:03:11,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:03:11,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:03:11,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:03:11,117 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 13:03:11,168 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:03:11,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:03:11,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:03:11,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:03:11,174 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:03:11,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:03:11,174 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:03:11,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:03:11,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:03:11,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:03:11,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:03:11,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:03:11,177 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:03:11,177 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:03:11,177 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:03:11,177 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:03:11,178 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:03:11,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:03:11,178 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:03:11,178 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:03:11,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:03:11,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:03:11,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:03:11,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:03:11,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:03:11,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:03:11,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:03:11,180 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:03:11,180 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:03:11,180 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:03:11,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:03:11,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:03:11,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:03:11,669 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:03:11,669 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:03:11,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:03:11,746 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26e6399c6/5bd19d1be6ea4f69be0137ec5b31e35a/FLAGb310bd0c9 [2020-10-29 13:03:12,615 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:03:12,616 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:03:12,654 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26e6399c6/5bd19d1be6ea4f69be0137ec5b31e35a/FLAGb310bd0c9 [2020-10-29 13:03:12,821 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26e6399c6/5bd19d1be6ea4f69be0137ec5b31e35a [2020-10-29 13:03:12,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:03:12,831 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:03:12,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:03:12,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:03:12,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:03:12,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:03:12" (1/1) ... [2020-10-29 13:03:12,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a9549d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:03:12, skipping insertion in model container [2020-10-29 13:03:12,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:03:12" (1/1) ... [2020-10-29 13:03:12,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:03:12,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:03:14,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:03:14,057 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:03:14,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:03:14,415 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:03:14,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:03:14 WrapperNode [2020-10-29 13:03:14,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:03:14,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:03:14,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:03:14,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:03:14,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:03:14" (1/1) ... [2020-10-29 13:03:14,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:03:14" (1/1) ... [2020-10-29 13:03:14,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:03:14" (1/1) ... [2020-10-29 13:03:14,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:03:14" (1/1) ... [2020-10-29 13:03:14,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:03:14" (1/1) ... [2020-10-29 13:03:14,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:03:14" (1/1) ... [2020-10-29 13:03:14,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:03:14" (1/1) ... [2020-10-29 13:03:14,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:03:14,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:03:14,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:03:14,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:03:14,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:03:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:03:14,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:03:14,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:03:14,680 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:03:14,681 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:03:14,681 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:03:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:03:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:03:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:03:14,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:03:14,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:03:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 13:03:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:03:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:03:14,685 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:03:14,685 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:03:14,687 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:03:14,688 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:03:14,688 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:03:14,688 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:03:14,688 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:03:14,688 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:03:14,688 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:03:14,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:03:14,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:03:14,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:03:14,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:03:14,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:03:14,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:03:14,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:03:17,105 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:03:17,105 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:03:17,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:03:17 BoogieIcfgContainer [2020-10-29 13:03:17,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:03:17,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:03:17,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:03:17,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:03:17,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:03:12" (1/3) ... [2020-10-29 13:03:17,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c0e4cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:03:17, skipping insertion in model container [2020-10-29 13:03:17,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:03:14" (2/3) ... [2020-10-29 13:03:17,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c0e4cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:03:17, skipping insertion in model container [2020-10-29 13:03:17,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:03:17" (3/3) ... [2020-10-29 13:03:17,118 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:03:17,131 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:03:17,137 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:03:17,152 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:03:17,186 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:03:17,186 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:03:17,186 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:03:17,187 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:03:17,187 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:03:17,187 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:03:17,187 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:03:17,187 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:03:17,220 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states. [2020-10-29 13:03:17,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-29 13:03:17,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:03:17,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:03:17,246 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:03:17,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:03:17,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1021088061, now seen corresponding path program 1 times [2020-10-29 13:03:17,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:03:17,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551944930] [2020-10-29 13:03:17,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:03:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:18,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:18,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:19,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:19,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:20,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:20,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:20,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:20,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:21,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:21,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:23,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:23,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:23,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 13:03:23,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:03:23,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-29 13:03:23,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:23,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:23,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:03:23,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:03:23,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 13:03:23,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:03:24,177 WARN L193 SmtUtils]: Spent 601.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 13:03:24,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:03:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:24,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:24,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:24,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:03:24,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:03:24,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 13:03:24,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:24,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:24,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:03:24,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:03:24,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:03:24,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:03:24,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:03:24,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551944930] [2020-10-29 13:03:24,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:03:24,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:03:24,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875034891] [2020-10-29 13:03:24,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:03:24,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:03:24,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:03:24,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:03:24,433 INFO L87 Difference]: Start difference. First operand 636 states. Second operand 5 states. [2020-10-29 13:03:30,539 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 13:03:32,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:03:32,248 INFO L93 Difference]: Finished difference Result 1807 states and 3240 transitions. [2020-10-29 13:03:32,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:03:32,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 240 [2020-10-29 13:03:32,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:03:32,275 INFO L225 Difference]: With dead ends: 1807 [2020-10-29 13:03:32,275 INFO L226 Difference]: Without dead ends: 1206 [2020-10-29 13:03:32,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:03:32,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2020-10-29 13:03:32,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1167. [2020-10-29 13:03:32,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1167 states. [2020-10-29 13:03:32,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1807 transitions. [2020-10-29 13:03:32,426 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1807 transitions. Word has length 240 [2020-10-29 13:03:32,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:03:32,427 INFO L481 AbstractCegarLoop]: Abstraction has 1167 states and 1807 transitions. [2020-10-29 13:03:32,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:03:32,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1807 transitions. [2020-10-29 13:03:32,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-29 13:03:32,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:03:32,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:03:32,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:03:32,438 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:03:32,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:03:32,439 INFO L82 PathProgramCache]: Analyzing trace with hash 2005715695, now seen corresponding path program 1 times [2020-10-29 13:03:32,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:03:32,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42893843] [2020-10-29 13:03:32,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:03:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:32,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:32,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:33,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:33,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:33,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:33,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:33,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:33,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:34,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:34,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:34,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:36,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:36,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:36,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:37,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:37,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 13:03:37,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:03:37,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 13:03:37,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:37,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:03:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:03:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 13:03:37,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:03:38,193 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 13:03:38,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:03:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:38,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:38,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:38,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:03:38,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:03:38,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 13:03:38,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:38,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:38,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:03:38,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:03:38,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:03:38,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:03:38,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:03:38,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42893843] [2020-10-29 13:03:38,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:03:38,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:03:38,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492806952] [2020-10-29 13:03:38,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:03:38,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:03:38,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:03:38,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:03:38,427 INFO L87 Difference]: Start difference. First operand 1167 states and 1807 transitions. Second operand 5 states. [2020-10-29 13:03:43,785 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 13:03:45,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:03:45,401 INFO L93 Difference]: Finished difference Result 3388 states and 5231 transitions. [2020-10-29 13:03:45,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:03:45,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 242 [2020-10-29 13:03:45,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:03:45,417 INFO L225 Difference]: With dead ends: 3388 [2020-10-29 13:03:45,417 INFO L226 Difference]: Without dead ends: 2282 [2020-10-29 13:03:45,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:03:45,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2020-10-29 13:03:45,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2249. [2020-10-29 13:03:45,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2249 states. [2020-10-29 13:03:45,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2249 states to 2249 states and 3459 transitions. [2020-10-29 13:03:45,541 INFO L78 Accepts]: Start accepts. Automaton has 2249 states and 3459 transitions. Word has length 242 [2020-10-29 13:03:45,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:03:45,541 INFO L481 AbstractCegarLoop]: Abstraction has 2249 states and 3459 transitions. [2020-10-29 13:03:45,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:03:45,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states and 3459 transitions. [2020-10-29 13:03:45,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-29 13:03:45,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:03:45,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:03:45,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:03:45,550 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:03:45,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:03:45,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1267856158, now seen corresponding path program 1 times [2020-10-29 13:03:45,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:03:45,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138148726] [2020-10-29 13:03:45,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:03:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:45,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:45,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:45,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:46,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:46,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:46,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:46,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:46,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:46,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:47,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:50,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:50,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-29 13:03:50,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:03:50,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 13:03:50,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:50,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:50,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:03:50,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:03:50,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 13:03:50,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:03:51,318 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 13:03:51,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:03:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:51,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:51,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:51,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:03:51,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:03:51,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 13:03:51,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:51,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:51,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:03:51,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:03:51,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:03:51,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:03:51,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:03:51,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138148726] [2020-10-29 13:03:51,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:03:51,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:03:51,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036881712] [2020-10-29 13:03:51,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:03:51,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:03:51,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:03:51,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:03:51,540 INFO L87 Difference]: Start difference. First operand 2249 states and 3459 transitions. Second operand 5 states. [2020-10-29 13:03:57,371 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 13:03:59,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:03:59,201 INFO L93 Difference]: Finished difference Result 6432 states and 9836 transitions. [2020-10-29 13:03:59,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:03:59,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 244 [2020-10-29 13:03:59,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:03:59,227 INFO L225 Difference]: With dead ends: 6432 [2020-10-29 13:03:59,227 INFO L226 Difference]: Without dead ends: 4396 [2020-10-29 13:03:59,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:03:59,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4396 states. [2020-10-29 13:03:59,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4396 to 4381. [2020-10-29 13:03:59,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4381 states. [2020-10-29 13:03:59,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4381 states to 4381 states and 6697 transitions. [2020-10-29 13:03:59,506 INFO L78 Accepts]: Start accepts. Automaton has 4381 states and 6697 transitions. Word has length 244 [2020-10-29 13:03:59,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:03:59,507 INFO L481 AbstractCegarLoop]: Abstraction has 4381 states and 6697 transitions. [2020-10-29 13:03:59,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:03:59,507 INFO L276 IsEmpty]: Start isEmpty. Operand 4381 states and 6697 transitions. [2020-10-29 13:03:59,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-29 13:03:59,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:03:59,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:03:59,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:03:59,520 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:03:59,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:03:59,521 INFO L82 PathProgramCache]: Analyzing trace with hash -809576879, now seen corresponding path program 1 times [2020-10-29 13:03:59,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:03:59,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333002041] [2020-10-29 13:03:59,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:03:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:59,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:59,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:59,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:59,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:00,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:00,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:00,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:00,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:00,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:01,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:02,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:03,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:03,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:04,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:04:04,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-29 13:04:04,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:04:04,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-29 13:04:04,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:04:04,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:04:04,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:04:04,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 13:04:04,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 13:04:04,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:04:05,188 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 13:04:05,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:04:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:05,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:05,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:04:05,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:04:05,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:04:05,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:04:05,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:04:05,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:04:05,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:04:05,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:04:05,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:04:05,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:04:05,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:04:05,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333002041] [2020-10-29 13:04:05,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:04:05,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:04:05,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042084865] [2020-10-29 13:04:05,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:04:05,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:04:05,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:04:05,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:04:05,379 INFO L87 Difference]: Start difference. First operand 4381 states and 6697 transitions. Second operand 4 states. [2020-10-29 13:04:11,244 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2020-10-29 13:04:12,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:04:12,945 INFO L93 Difference]: Finished difference Result 12415 states and 18831 transitions. [2020-10-29 13:04:12,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:04:12,946 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 246 [2020-10-29 13:04:12,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:04:12,981 INFO L225 Difference]: With dead ends: 12415 [2020-10-29 13:04:12,981 INFO L226 Difference]: Without dead ends: 8485 [2020-10-29 13:04:12,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:04:13,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8485 states. [2020-10-29 13:04:13,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8485 to 8467. [2020-10-29 13:04:13,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8467 states. [2020-10-29 13:04:13,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8467 states to 8467 states and 12830 transitions. [2020-10-29 13:04:13,511 INFO L78 Accepts]: Start accepts. Automaton has 8467 states and 12830 transitions. Word has length 246 [2020-10-29 13:04:13,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:04:13,512 INFO L481 AbstractCegarLoop]: Abstraction has 8467 states and 12830 transitions. [2020-10-29 13:04:13,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:04:13,512 INFO L276 IsEmpty]: Start isEmpty. Operand 8467 states and 12830 transitions. [2020-10-29 13:04:13,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-29 13:04:13,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:04:13,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:04:13,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:04:13,533 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:04:13,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:04:13,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1413916182, now seen corresponding path program 1 times [2020-10-29 13:04:13,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:04:13,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446125706] [2020-10-29 13:04:13,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:04:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:13,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:13,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:13,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:13,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:14,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:14,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:14,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:14,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:14,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:14,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:18,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:04:18,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-29 13:04:18,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:04:18,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 13:04:18,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:04:18,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:04:18,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:04:18,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:04:18,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 13:04:18,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:04:19,175 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 13:04:19,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:04:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:19,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:19,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:04:19,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:04:19,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:04:19,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:04:19,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:04:19,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:04:19,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:04:19,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:04:19,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:04:19,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:04:19,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:04:19,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446125706] [2020-10-29 13:04:19,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:04:19,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:04:19,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239576596] [2020-10-29 13:04:19,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:04:19,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:04:19,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:04:19,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:04:19,305 INFO L87 Difference]: Start difference. First operand 8467 states and 12830 transitions. Second operand 5 states. [2020-10-29 13:04:24,439 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 13:04:26,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:04:26,160 INFO L93 Difference]: Finished difference Result 25027 states and 37888 transitions. [2020-10-29 13:04:26,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:04:26,161 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 246 [2020-10-29 13:04:26,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:04:26,215 INFO L225 Difference]: With dead ends: 25027 [2020-10-29 13:04:26,215 INFO L226 Difference]: Without dead ends: 16575 [2020-10-29 13:04:26,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:04:26,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16575 states. [2020-10-29 13:04:27,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16575 to 16523. [2020-10-29 13:04:27,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16523 states. [2020-10-29 13:04:27,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16523 states to 16523 states and 24845 transitions. [2020-10-29 13:04:27,286 INFO L78 Accepts]: Start accepts. Automaton has 16523 states and 24845 transitions. Word has length 246 [2020-10-29 13:04:27,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:04:27,287 INFO L481 AbstractCegarLoop]: Abstraction has 16523 states and 24845 transitions. [2020-10-29 13:04:27,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:04:27,287 INFO L276 IsEmpty]: Start isEmpty. Operand 16523 states and 24845 transitions. [2020-10-29 13:04:27,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-29 13:04:27,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:04:27,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:04:27,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:04:27,326 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:04:27,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:04:27,327 INFO L82 PathProgramCache]: Analyzing trace with hash 477133521, now seen corresponding path program 1 times [2020-10-29 13:04:27,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:04:27,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185337121] [2020-10-29 13:04:27,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:04:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:27,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:27,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:27,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:27,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:27,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:27,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:27,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:28,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:28,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:28,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:29,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:29,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:29,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:32,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:04:32,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-29 13:04:32,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:04:32,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 13:04:32,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:04:32,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:04:32,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:04:32,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 13:04:32,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 13:04:32,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:04:32,959 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 13:04:32,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:04:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:32,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:32,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:04:32,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:04:32,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:04:32,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:04:32,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:04:32,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:04:32,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:04:32,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:04:32,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:04:32,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:04:33,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:04:33,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185337121] [2020-10-29 13:04:33,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:04:33,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:04:33,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870665040] [2020-10-29 13:04:33,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:04:33,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:04:33,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:04:33,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:04:33,089 INFO L87 Difference]: Start difference. First operand 16523 states and 24845 transitions. Second operand 4 states. [2020-10-29 13:04:39,771 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2020-10-29 13:04:41,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:04:41,738 INFO L93 Difference]: Finished difference Result 47809 states and 71623 transitions. [2020-10-29 13:04:41,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:04:41,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 248 [2020-10-29 13:04:41,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:04:41,795 INFO L225 Difference]: With dead ends: 47809 [2020-10-29 13:04:41,795 INFO L226 Difference]: Without dead ends: 32433 [2020-10-29 13:04:41,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:04:41,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32433 states. [2020-10-29 13:04:43,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32433 to 32389. [2020-10-29 13:04:43,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32389 states. [2020-10-29 13:04:43,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32389 states to 32389 states and 48361 transitions. [2020-10-29 13:04:43,316 INFO L78 Accepts]: Start accepts. Automaton has 32389 states and 48361 transitions. Word has length 248 [2020-10-29 13:04:43,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:04:43,316 INFO L481 AbstractCegarLoop]: Abstraction has 32389 states and 48361 transitions. [2020-10-29 13:04:43,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:04:43,316 INFO L276 IsEmpty]: Start isEmpty. Operand 32389 states and 48361 transitions. [2020-10-29 13:04:43,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-29 13:04:43,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:04:43,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:04:43,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:04:43,361 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:04:43,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:04:43,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1690245206, now seen corresponding path program 1 times [2020-10-29 13:04:43,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:04:43,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036212038] [2020-10-29 13:04:43,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:04:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:43,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:43,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:43,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:43,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:43,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:43,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:43,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:43,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:44,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:44,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:44,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:44,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:44,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:48,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:04:48,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-29 13:04:48,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:04:48,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-29 13:04:48,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:04:48,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:04:48,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:04:48,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:04:48,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 13:04:48,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:04:49,022 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 13:04:49,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:04:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:49,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:49,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:04:49,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:04:49,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:04:49,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 13:04:49,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:04:49,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:04:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:04:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:04:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:04:49,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:04:49,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:04:49,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036212038] [2020-10-29 13:04:49,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:04:49,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:04:49,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518122166] [2020-10-29 13:04:49,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:04:49,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:04:49,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:04:49,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:04:49,157 INFO L87 Difference]: Start difference. First operand 32389 states and 48361 transitions. Second operand 5 states. [2020-10-29 13:04:55,048 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 13:04:57,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:04:57,145 INFO L93 Difference]: Finished difference Result 70026 states and 104610 transitions. [2020-10-29 13:04:57,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:04:57,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 248 [2020-10-29 13:04:57,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:04:57,226 INFO L225 Difference]: With dead ends: 70026 [2020-10-29 13:04:57,226 INFO L226 Difference]: Without dead ends: 37758 [2020-10-29 13:04:57,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:04:57,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37758 states. [2020-10-29 13:04:59,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37758 to 32328. [2020-10-29 13:04:59,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32328 states. [2020-10-29 13:04:59,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32328 states to 32328 states and 48222 transitions. [2020-10-29 13:04:59,134 INFO L78 Accepts]: Start accepts. Automaton has 32328 states and 48222 transitions. Word has length 248 [2020-10-29 13:04:59,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:04:59,134 INFO L481 AbstractCegarLoop]: Abstraction has 32328 states and 48222 transitions. [2020-10-29 13:04:59,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:04:59,135 INFO L276 IsEmpty]: Start isEmpty. Operand 32328 states and 48222 transitions. [2020-10-29 13:04:59,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-29 13:04:59,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:04:59,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:04:59,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:04:59,171 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:04:59,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:04:59,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1487518643, now seen corresponding path program 1 times [2020-10-29 13:04:59,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:04:59,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919496663] [2020-10-29 13:04:59,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:04:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:59,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:59,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:59,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:59,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:59,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:59,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:59,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:59,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:59,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:59,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:03,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:03,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:03,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:04,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:05:04,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-29 13:05:04,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:05:04,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 13:05:04,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:05:04,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:05:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:05:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:05:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 13:05:04,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:05:04,818 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 13:05:04,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:05:04,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:05:04,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:04,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:05:04,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:05:04,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:05:04,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:05:04,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:05:04,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:05:04,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:05:04,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:05:04,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:05:04,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:05:04,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:05:04,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919496663] [2020-10-29 13:05:04,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:05:04,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:05:04,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463115492] [2020-10-29 13:05:04,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:05:04,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:05:04,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:05:04,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:05:04,946 INFO L87 Difference]: Start difference. First operand 32328 states and 48222 transitions. Second operand 5 states. [2020-10-29 13:05:11,823 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 13:05:14,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:05:14,347 INFO L93 Difference]: Finished difference Result 95704 states and 142617 transitions. [2020-10-29 13:05:14,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:05:14,348 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 250 [2020-10-29 13:05:14,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:05:14,491 INFO L225 Difference]: With dead ends: 95704 [2020-10-29 13:05:14,492 INFO L226 Difference]: Without dead ends: 63545 [2020-10-29 13:05:14,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:05:14,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63545 states. [2020-10-29 13:05:18,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63545 to 63337. [2020-10-29 13:05:18,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63337 states. [2020-10-29 13:05:18,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63337 states to 63337 states and 93706 transitions. [2020-10-29 13:05:18,310 INFO L78 Accepts]: Start accepts. Automaton has 63337 states and 93706 transitions. Word has length 250 [2020-10-29 13:05:18,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:05:18,310 INFO L481 AbstractCegarLoop]: Abstraction has 63337 states and 93706 transitions. [2020-10-29 13:05:18,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:05:18,310 INFO L276 IsEmpty]: Start isEmpty. Operand 63337 states and 93706 transitions. [2020-10-29 13:05:18,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-29 13:05:18,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:05:18,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:05:18,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:05:18,532 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:05:18,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:05:18,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1922844976, now seen corresponding path program 1 times [2020-10-29 13:05:18,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:05:18,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567478268] [2020-10-29 13:05:18,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:05:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:05:18,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:18,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:18,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:18,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:18,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:18,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:19,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:19,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:19,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:22,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:22,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:22,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:23,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:23,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:05:23,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-29 13:05:23,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:05:23,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 13:05:23,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:05:23,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:05:23,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:05:23,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:05:23,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 13:05:23,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:05:24,262 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 13:05:24,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:05:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:05:24,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:24,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:05:24,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:05:24,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:05:24,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 13:05:24,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:05:24,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:05:24,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:05:24,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:05:24,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:05:24,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:05:24,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:05:24,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567478268] [2020-10-29 13:05:24,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:05:24,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:05:24,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261638238] [2020-10-29 13:05:24,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:05:24,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:05:24,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:05:24,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:05:24,416 INFO L87 Difference]: Start difference. First operand 63337 states and 93706 transitions. Second operand 5 states. [2020-10-29 13:05:34,990 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 13:05:39,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:05:39,016 INFO L93 Difference]: Finished difference Result 183131 states and 269812 transitions. [2020-10-29 13:05:39,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:05:39,016 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 252 [2020-10-29 13:05:39,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:05:39,206 INFO L225 Difference]: With dead ends: 183131 [2020-10-29 13:05:39,206 INFO L226 Difference]: Without dead ends: 123875 [2020-10-29 13:05:39,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:05:39,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123875 states. [2020-10-29 13:05:46,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123875 to 123443. [2020-10-29 13:05:46,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123443 states. [2020-10-29 13:05:47,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123443 states to 123443 states and 181326 transitions. [2020-10-29 13:05:47,276 INFO L78 Accepts]: Start accepts. Automaton has 123443 states and 181326 transitions. Word has length 252 [2020-10-29 13:05:47,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:05:47,276 INFO L481 AbstractCegarLoop]: Abstraction has 123443 states and 181326 transitions. [2020-10-29 13:05:47,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:05:47,276 INFO L276 IsEmpty]: Start isEmpty. Operand 123443 states and 181326 transitions. [2020-10-29 13:05:47,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-29 13:05:47,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:05:47,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:05:47,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:05:47,642 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:05:47,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:05:47,643 INFO L82 PathProgramCache]: Analyzing trace with hash -767048589, now seen corresponding path program 1 times [2020-10-29 13:05:47,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:05:47,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408252313] [2020-10-29 13:05:47,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:05:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:05:47,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:47,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:47,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:47,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:47,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:47,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:48,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:48,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:48,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:48,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:48,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:48,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:52,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:05:52,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-29 13:05:52,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:05:52,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 13:05:52,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:05:52,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:05:52,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:05:52,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-29 13:05:52,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 13:05:52,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:05:53,249 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 13:05:53,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:05:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:05:53,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:53,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:05:53,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:05:53,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:05:53,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:05:53,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:05:53,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:05:53,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:05:53,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:05:53,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:05:53,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:05:53,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:05:53,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408252313] [2020-10-29 13:05:53,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:05:53,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:05:53,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105090218] [2020-10-29 13:05:53,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:05:53,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:05:53,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:05:53,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:05:53,346 INFO L87 Difference]: Start difference. First operand 123443 states and 181326 transitions. Second operand 4 states. [2020-10-29 13:06:09,019 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2020-10-29 13:06:15,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:06:15,380 INFO L93 Difference]: Finished difference Result 352067 states and 513580 transitions. [2020-10-29 13:06:15,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:06:15,381 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 254 [2020-10-29 13:06:15,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:06:15,960 INFO L225 Difference]: With dead ends: 352067 [2020-10-29 13:06:15,960 INFO L226 Difference]: Without dead ends: 239571 [2020-10-29 13:06:16,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:06:16,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239571 states. [2020-10-29 13:06:30,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239571 to 239139. [2020-10-29 13:06:30,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239139 states. [2020-10-29 13:06:31,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239139 states to 239139 states and 348062 transitions. [2020-10-29 13:06:31,843 INFO L78 Accepts]: Start accepts. Automaton has 239139 states and 348062 transitions. Word has length 254 [2020-10-29 13:06:31,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:06:31,844 INFO L481 AbstractCegarLoop]: Abstraction has 239139 states and 348062 transitions. [2020-10-29 13:06:31,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:06:31,844 INFO L276 IsEmpty]: Start isEmpty. Operand 239139 states and 348062 transitions. [2020-10-29 13:06:32,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-29 13:06:32,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:06:32,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:06:32,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:06:32,085 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:06:32,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:06:32,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1415402424, now seen corresponding path program 1 times [2020-10-29 13:06:32,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:06:32,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531390359] [2020-10-29 13:06:32,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:06:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:06:32,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:32,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:32,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:32,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:32,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:32,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:32,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:32,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:32,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:32,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:33,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:33,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:33,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:33,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:37,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:06:37,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-29 13:06:37,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:06:37,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 13:06:37,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:06:37,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:06:37,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:06:37,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:06:37,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-29 13:06:37,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:06:37,778 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 13:06:37,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:06:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:06:37,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:06:37,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:06:37,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:06:37,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:06:37,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:06:37,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:06:37,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:06:37,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:06:37,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:06:37,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:06:37,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:06:37,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:06:37,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531390359] [2020-10-29 13:06:37,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:06:37,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:06:37,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229569462] [2020-10-29 13:06:37,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:06:37,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:06:37,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:06:37,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:06:37,904 INFO L87 Difference]: Start difference. First operand 239139 states and 348062 transitions. Second operand 5 states.